With or without -Werror, you need your builds to be clean with the project's chosen compilers. Linux decided, on a whim, that a pre-release of GCC 15 ought to

With or without -Werror, you need your builds to be clean with the project's chosen compilers. Linux decided, on a whim, that a pre-release of GCC 15 ought to suddenly be a compiler that the Linux project officially uses, and threw in some last-minute commits straight to main, which is insane. But even without -Werror, when the project decides to upgrade compiler versions, warnings must be silenced, either through disabling new warnings or through changing the source code. Warnings have value, and they only have value if they're not routinely ignored. For the record, I agree that -Werror sucks. It's nice in CI, but it's terrible to have it enabled by default, as it means that your contributors will have their build broken just because they used a different compiler version than the ones which the project has decided to officially adopt. But I don't think it's the problem here. The problem here is Linus's sudden decision to upgrade to a pre-release version of GCC which has new warnings and commit "fixes" straight to main.